San Francisco supervisors voted 8 to 1 Tuesday to ban the use of facial recognition software by police and other city departments, becoming the first U.S. city to outlaw a rapidly developing technology that has alarmed privacy and civil liberties advocates.

The ban is part of broader legislation that requires city departments to establish use policies and obtain board approval for surveillance technology they want to purchase or are using at present. Several other local governments require departments to disclose and seek approval for surveillance technology.

"This is really about saying: 'We can have security without being a security state. We can have good policing without being a police state.' And part of that is building trust with the community based on good community information, not on Big Brother technology," said Supervisor Aaron Peskin, who championed the legislation.

The ban applies to San Francisco police and other municipal departments. It does not affect use of the technology by the federal government at airports and ports, nor does it limit personal or business use.

The San Francisco board did not spend time Tuesday debating the outright ban on facial recognition technology, focusing instead on the possible burdens placed on police, the transit system and other city agencies that need to maintain public safety.

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